# Straight Lines

Parent topic:Geometry
• ### Parallel Lines in the Coordinate Plane: Quick Exploration

Activity

GeoGebra Team

• ### Exploring Intersections of Planes

Activity

GeoGebra Team

• ### Alternate Interior Angles: IM 8.1.14

Book

GeoGebra Classroom Activities

• ### Mean Value Theorem: Quick Intuitive Tests

Activity

Tim Brzezinski

• ### Sections of 3D Shapes

Book

Anthony OR 柯志明

• ### Transversal Intersects Parallel Lines

Activity

Tim Brzezinski

• ### Circle Terminology

Activity

Tim Brzezinski

• ### Medians and Centroid Dance

Activity

Tim Brzezinski

• ### Slope (Quiz) II

Activity

Tim Brzezinski

• ### Solving Linear Systems by Graphing: REVAMPED

Activity

Tim Brzezinski

• ### Exploring Corresponding Angles (V2)

Activity

Tim Brzezinski

• ### Properties of Tangents Drawn to Circles (A)

Activity

Tim Brzezinski

• ### Same Side Interior Angles Theorem

Activity

Tim Brzezinski

• ### Writing Equations of Parallel and Perpendicular Lines

Activity

Tim Brzezinski

• ### Alternate Interior Angles: Quick Investigation

Activity

Tim Brzezinski

• ### Parallel & Perpendicular Consequence

Activity

Tim Brzezinski

• ### Triangle Median Illustrator & Definition Writing Prompt

Activity

Tim Brzezinski

• ### Exploring Alternate Interior Angles (V2)

Activity

Tim Brzezinski

• ### Properties of Tangents Drawn to Circles (B)

Activity

Tim Brzezinski

• ### Perpendicular Lines Investigation (VB)

Activity

Tim Brzezinski

• ### Finding Slope Given 2 Points: Question Generator

Activity

Tim Brzezinski

• ### Blueprint Equation of a Line (I)

Activity

Tim Brzezinski

• ### Perpendicular Bisector: Construction

Activity

Tim Brzezinski

• ### Vertical Angles Exploration (1)

Activity

Tim Brzezinski